<template>
  <section class="msite">
    <!--首页头部-->
    <HeaderTop :title="address.name">
      <router-link slot="search" to="/search" class="header_search">
        <i class="iconfont icon-sousuo"></i>
      </router-link>
      <router-link slot="login" to="/login" class="header_login">
        <span class="header_login_text" v-if="!userInfo._id">登录|注册</span>
        <span class="header_login_text" v-else>
          <i class="iconfont icon-person"></i>
        </span>
      </router-link>
    </HeaderTop>
    <!--首页导航-->
    <nav class="msite_nav">
      <div class="swiper-container" v-if="categorysArr.length > 0">
        <div class="swiper-wrapper">
          <div class="swiper-slide" v-for="categoryArr in categorysArr">
            <a href="javascript:" class="link_to_food" v-for="category in categoryArr">
              <div class="food_container">
                <img :src="imageBaseUrl + category.image_url">
              </div>
              <span>{{category.title}}</span>
            </a>
          </div>
        </div>
        <!-- Add Pagination -->
        <div class="swiper-pagination"></div>
      </div>
      <img src="./images/msite_back.svg" v-else>
    </nav>
    <!--首页附近商家-->
    <div class="msite_shop_list">
      <div class="shop_header">
        <i class="iconfont icon-xuanxiang"></i>
        <span class="shop_header_title">附近商家</span>
      </div>
      <ShopList/>
    </div>
  </section>
</template>

<script>
  import Swiper from 'swiper'
  import 'swiper/dist/css/swiper.min.css'
  import HeaderTop from "../../components/HeaderTop/HeaderTop";
  import ShopList from "../../components/ShopList/ShopList";
  import store from '../../store'
  import {mapState} from 'vuex'

  export default {
    data() {
      return {
        imageBaseUrl: 'https://fuss10.elemecdn.com'
      }
    },
    name: "Msite",
    components: {
      HeaderTop, ShopList
    },
    store,
    mounted() {
      this.$store.dispatch('getCategorys')
    },
    computed: {
      ...mapState(['address', 'categorys','userInfo']),

      // 把分类分割成8个一组
      categorysArr() {
        const max = 8
        // 分割后的数组
        const arr = []
        const categorys = this.categorys;
        // 其中一组
        let smallArr = []
        categorys.forEach((c, index) => {
          if (smallArr.length === 0) {
            arr.push(smallArr)
          }
          smallArr.push(c)
          if (smallArr.length === max) {
            smallArr = []
          }
        })
        return arr
      }
    },
    watch: {
      categorys(value) {
        this.$nextTick(() => {
          new Swiper('.swiper-container', {
            pagination: {
              el: '.swiper-pagination'
            },
            loop: true
          })
        })
      }
    }
  }
</script>

<style lang="stylus" rel="stylesheet/stylus">
  @import "../../common/stylus/mixins.styl"
  &.msite //首页
    width 100%

    .header
      header()

      .header_search
        position absolute
        left 15px
        top 50%
        transform translateY(-50%)
        width 10%
        height 50%

        .icon-sousuo
          font-size 25px
          color #fff

      .header_title
        header_title()

        .header_title_text
          font-size 20px
          color #fff
          display block

      .header_login
        font-size 14px
        color #fff
        position absolute
        right 15px
        top 50%
        transform translateY(-50%)

        .header_login_text
          color #fff

    .msite_nav
      bottom-border-1px(#e4e4e4)
      margin-top 45px
      height 200px
      background #fff

      .swiper-container
        width 100%
        height 100%

        .swiper-wrapper
          width 100%
          height 100%

          .swiper-slide
            display flex
            justify-content center
            align-items flex-start
            flex-wrap wrap

            .link_to_food
              width 25%

              .food_container
                display block
                width 100%
                text-align center
                padding-bottom 10px
                font-size 0

                img
                  display inline-block
                  width 50px
                  height 50px

              span
                display block
                width 100%
                text-align center
                font-size 13px
                color #666

        .swiper-pagination
          > span.swiper-pagination-bullet-active
            background #02a774

    .msite_shop_list
      top-border-1px(#e4e4e4)
      margin-top 10px
      background #fff

      .shop_header
        padding 10px 10px 0

        .shop_icon
          margin-left 5px
          color #999

        .shop_header_title
          color #999
          font-size 14px
          line-height 20px


</style>
